1. There flourished many learned men in the Church at that time, whose letters to each other have been preserved and are easily accessible. They have been kept until our time in the library at Ælia, 1933
which was established by Alexander, who at that time presided over that church. We have been able to gather from that library material for our present work.

2. Among these Beryllus 1934
has left us, besides letters and treatises, various elegant works. He was bishop of Bostra in Arabia. Likewise also Hippolytus, 1935
who presided over another church, has left writings.

3. There has reached us also a dialogue of Caius, 1936
a very learned man, which was held at Rome under Zephyrinus, 1937
with Proclus, who contended for the Phrygian heresy. In this he curbs the rashness and boldness of his opponents in setting forth new Scriptures. He mentions only thirteen epistles of the holy apostle, not counting that to the Hebrews 1938
with the others. And unto our day there are some among the Romans who do not consider this a work of the apostle.

Footnotes

Ælia, the city built by Hadrian upon the site of Jerusalem (see Bk. IV. chap. 6). We do not know the subsequent history of this library of Alexander, but it had already been in existence nearly a hundred years when Eusebius examined it.